21223003233 has 8 divisors (see below), whose sum is σ = 29527656768. Its totient is φ = 13533509264.

The previous prime is 21223003231. The next prime is 21223003237. The reversal of 21223003233 is 33230032212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21223003233 - 2¹ = 21223003231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21223003231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153789810 + ... + 153789947.

It is an arithmetic number, because the mean of its divisors is an integer number (3690957096).

Almost surely, 2^21223003233 is an apocalyptic number.

21223003233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21223003233 is a deficient number, since it is larger than the sum of its proper divisors (8304653535).

21223003233 is a wasteful number, since it uses less digits than its factorization.

21223003233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307579783.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21223003233 its reverse (33230032212), we get a palindrome (54453035445).

The spelling of 21223003233 in words is "twenty-one billion, two hundred twenty-three million, three thousand, two hundred thirty-three".